Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun sidereal_hour

1 sense of sidereal hour

Sense 1
sidereal hour -- (1/24 of a sidereal day)
       => hour, hr, 60 minutes -- (a period of time equal to 1/24th of a day; "the job will take more than an hour")
       => sidereal time -- (measured by the diurnal motion of stars)